driveline flanges

[awp_cruiser]

Thanks for the help here guys...

I have 2 drivelines that I've had retubed...
I believe one is an '85 and the other is a '86 or newer IFS. I've clearanced them both and just about ready to put them in until...

The bolt patterns are different on the CV end! I mean off by just a touch. Are there different patterns for the 85 and older vs the 86 and newer? I tought they were the same. I have a hard time believing that there is that large of a tolerance gap so overdrilling the hole seems like a bad idea.

Any info on this is appreciated.

Thanks

Andy

 

["N8"]

85 would be for a solid front axle that had an 8 inch ring gear the newer ifs trucks had a 7.5 inch ring gear in front. so yes the difrentials are diffrent for the front.

 

[Bob_Garrett]

Are you trying to install the CV on a truck that didn't have one previously? All CV bolt patterns are different from the u-joint pattern. Cheapest way to fix it is to rotate it 45 deg and drill new holes or you can get a triple drilled flange from Marlin Crawler. http://www.marlincrawler.com/htm/diff/pickup_diff.htm#parts

 

[Cube Dweller]

I just went through the same thing- 2 toyota CV's, one had a slighty different bolt pattern. It was NOT the same as a non-Cv shaft. I used a die grinder to slightly oblong the holes on the t-case output flange to fit either. They look like miniature diagonal slots and do not make the holes sloppy in the rotational axis or shear plane. YMMV.

 

[a85toy]

I just went through the same thing. I installed a cv front d/s into the rear of my '85. I bought the triple drilled flange from Marlin, it seemed to be the right fix for me. Now I can run a d/s from any Toyota, in case of trail breakage.

 

[awp_cruiser]

Thanks.

I am putting the CV's on the 40. (cut and turn)

I bought a flange from inchworm with the triple holes and transfered the holes to a round flange. (40's are old school coarse spine technology which makes finding predrilled flanges impossible)

It works on one driveline and not on the other?! The holes are just barely off which makes me onder if there is a pattern that is a couple millimeter different? Elonging might have to be the answer this time.

Thanks for your thoughts.

Andy